Wilcox, D. L. (1986). Public relations strategies and tactics. Harper and Row.
Cita Chicago (17th ed.)Wilcox, Dennis L. Public Relations Strategies and Tactics. Harper and Row, 1986.
Cita MLA (9th ed.)Wilcox, Dennis L. Public Relations Strategies and Tactics. Harper and Row, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.